MCQ’s On Binder Technology Binder Technology
Q. What is the pH level of leachate?
A. 1-3
B. 3-6
C. 6-9
D. 9-12
.
.Answer: C
Explanation: Process The pH level of the leachate has the requirement to be somewhere in between 6 to 9 on the pH scale. This would indicate that, the substance leachate is a basic substance.
Q. From what is furfural alcohol derived?
A. Carbon dioxide
B. Waste water
C. Waste vegetables
D. Sulphur dioxide
.
.Answer: C
Explanation: Process Furfural alcohol (FA. gets derived from vegetable matter which is wasted, by processing it under pressure.
Q. What is the source of fuel of the boiler in process energy?
A. Waste from FA processing
B. Waste from CO2 production
C. Waste from SO2 production
D. Waste from NO2 production
.
.Answer: A
Explanation: Process The waste that is achieved after processing of furfural alcohol is used to fuel the boiler in the process energy.
Q. For casting, in phenolic esters, formaldehyde levels are low.
A. True
B. False
.
.Answer: A
Explanation: Process On mixing and even on casting, in the phenolic esters, the formaldehyde levels are found to be exceedingly low.
Q. What is the formaldehyde level in phenolic ester in mixing?
A. Less than 0.2 parts per million
B. Less than 0.3 parts per million
C. Less than 0.4 parts per million
D. Less than 0.5 parts per million
.
..Answer: D
Explanation: Process None.
Q. What is the formaldehyde level in phenolic ester in casting?
A. Less than 0.2ppm
B. Less than 0.3ppm
C. Less than 0.4ppm
D. Less than 0.5ppm
.
..Answer: D
Explanation: Process None.
Q. What is the phenol level in phenolic ester in casting?
A. Less than 2ppm
B. Less than 3ppm
C. Less than 4ppm
D. Less than 5ppm
.
.Answer: A
Explanation: Process None.
Q. What should the total percentage of re-use of sand in reclamation be?
A. 80%
B. 85%
C. 90%
D. 95%
.
..Answer: D
Explanation: Process There is some amount of threat which is faced by the phenolic-ester compounds. This threat causes a kind of limitation to the reclamation. Ideally, the total percentage should be 95%.
Q. Potassium hydroxide melts at what temperature?
A. 260°C
B. 360°C
C. 460°C
D. 560°C
.
Q. Potassium hydroxide boils at what temperature?
A. 1260°C
B. 1320°C
C. 1840°C
D. 2560°C
.
.Answer: B
Explanation: Process None.
Q. Which of the following is an advantage of high volume core production?
A. Durability
B. High strength
C. Low cost
D. Cures low volume production
.
.Answer: C
Explanation: The very basic requirements of high volume core production is, low cost and fast manufacturing.
Q. High volume mould production is done using which sand?
A. Green sand
B. Dry sand
C. Loam sand
D. Sharp sand
.
.Answer: A
Explanation: When it comes to the production of high volume core productions, the cost essentially should be low. High volume mould production is done using green sand only.
Q. Which of the following is not an advantage in low volume core production?
A. High production
B. Consistency
C. Mould rigidity
D. Hardenability
.
..Answer: D
Explanation: In low volume core production, it offers high rate of production, better consistency and mould rigidity, but not hardenability.
Q. Which of the following is not an advantage of moderate to high volume aluminium castings?
A. Growth in low pressure
B. Flexibility
C. Low cost
D. Low brittleness
.
..Answer: D
Explanation: In moderate to high volume aluminium castings, low pressure growth, flexibility and lower costs is an advantage, but not low brittleness.
Q. What does LPS stand for?
A. Limited Production Sand casting
B. Low Pressure System
C. Limited Production System
D. Low Pressure Sand casting
.
..Answer: D
Explanation: LPS stands for Low Pressure Sand Casting. The growth in LPS in mainly found to be used only in for the cylindrical blocks and heads.
Q. What is mixed with calcium hydroxide on sand for CO2 cured polyacrylate?
A. Sodium polyacrylate
B. Calcium polyacrylate
C. Aluminium polyacrylate
D. Iron polyacrylate
.
.Answer: A
Explanation: According to the reaction, sodium polyacrylate is mixed with calcium hydroxide (CaOH2) on sand and is later cured with carbon dioxide gas.
Q. In Amine cured phenolic urethane, what is used as the catalyzing reagent?
A. Primary amine
B. Secondary amine
C. Tertiary amine
D. Nitrogen dioxide
.
.Answer: C
Explanation: In amine cured phenolic urethane, a tertiary vaporized amine is used as a catalyst and is therefore, used for the catalyzation of the reaction.
Q. What reacts with polyether phenolic resin to give polyurethane structure?
A. Diphenyl methane diisocynate
B. Triphenyl ethane diisocynate
C. Diphenyl ethane diisocynate
D. Triphenyl methane diisocynate
.
.Answer: A
Explanation: In amine cured phenolic urethane, a tertiary vaporized amine is used to catalyze the reaction between polyether phenolic resin and Diphenyl methane diisocynate to give out polyurethane structure.
Q. In Ester cured alkaline phenolic, what is used as a coreactant?
A. A phenol
B. A ketone
C. An ester
D. An aldehyde
.
.Answer: C
Explanation: In Ester cured alkaline phenolic, there is an ester called methyl formate, which is usually used as a coreactant.
Q. Green sand has high volume production rate than gas-vapour cured system.
A. True
B. False
.
.Answer: B
Explanation: Proces The production rate in gas and vapour cured system, is comparatively lower than that of green sand.
